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Answer :
Final answer:
Malaria is transferred to humans through the bite of an infected female Anopheles mosquito, which injects the Plasmodium parasite into the bloodstream. The parasites then multiply in the liver and invade red blood cells, leading to a cycle of infection. This process is critical in the transmission and severity of the disease.
Explanation:
How Malaria Pathogen is Transferred to Humans
Malaria is a zoonotic disease caused by the parasitic protozoa from the genus Plasmodium. The transmission of malaria to humans occurs primarily through the bite of an infected female Anopheles mosquito. Here’s a detailed explanation of the process:
- During a blood meal, the female Anopheles mosquito injects saliva containing Plasmodium parasites into the human bloodstream.
- The parasites then travel to the liver where they multiply and develop.
- After a period of growth, they re-enter the bloodstream and infect red blood cells (erythrocytes).
- Inside the erythrocytes, the parasites replicate asexually, eventually causing the red blood cells to burst and release more parasites into the bloodstream, continuing the cycle of infection.
The most common and deadly species of malaria parasite, Plasmodium falciparum, is responsible for a significant percentage of malaria cases globally, particularly in tropical regions.
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